2012 Zombies vs Aliens - In 2012, Aliens in search of new habitats wiped out the human race, having mistaken humans for just another pest on Earth. Their massive alpha particle weapons laid waste to all human life on the planet, leaving them free to sow the seeds that would make the planet livable for them.

Upon returning years later, expecting to find a new haven, they instead found that those same alpha particles had transformed the dead human flesh into undead hordes of Zombies! Now, as the Aliens return to Earth, a new power struggle to claim lordship over the planet has begun! You are the Zombie Commander charged with defeating the Aliens and saving Zombianity.

After that you can unlock the ability to become the Alien Commander and seize control over the Earth by eliminating the Zombie hordes.